A Numerical Method for Evaluating the Distortion of Angle-Modulated Signals in a Time Domain

As yet there exists no analytical method of obtaining the exact output distortion of BPF's for an angle-modulated signal input. In this paper, we have introduced a numerical method in which a filtering problem is described by the state space method and then is converted to a time domain difference equation. As a result, evaluation can be carried out quickly and easily.